"Uma Sick" is an episode of Oobi from the first season.
Uma has a cold, so Oobi and Kako spend the day trying to make her feel better. Grampu explains that what Uma really needs to do is rest. The boys sing Uma a beautiful lullaby until she falls asleep. Soon, she's back to her healthy self. — ABC Television
Oobi and Kako are playing "pat-a-cake." They invite the viewer to join them, but stop when they hear Uma sneezing. She explains that she does not feel well. Oobi calls for Grampu, who checks Uma's temperature and discovers that she has a fever. He instructs Oobi to get her tissues, Kako to get a box of juice, and Uma to lie on the couch while Grampu prepares some soup. Oobi and Kako are upset with Uma's predicament and promise to make her feel well again.
The boys create a "get better" card by taking a sheet of purple construction paper and decorating it with things Uma likes (confetti, colors, and sparkles). Kako realizes that Uma really likes Oobi, so he makes an opening for Oobi's head inside the card. The boys show the card to Uma, and it does make her feel better, but not less sick. They perform a dance for her, but none of their efforts work. Oobi and Kako tell Grampu that Uma is still sick even though they are trying to make her better. He assures them that Uma needs to rest and will feel better soon.
The boys decide to sing her a lullaby until she falls asleep. The following day, Uma is back to her healthy self. She joins Oobi and Kako in a rhyme game to celebrate, with words that rhyme with "-eez." The episode ends with a strong wind blowing all the items they had onto them, with Uma covered in branches, Oobi with a head covered in peas, and Kako's hat replaced with cheese.